Plow.



' W. N. SPRINGER.

PLOW APPLICATION FILED QEQ. 2th l9l2- RENEWED MAR. 30,1916.

Patented Nov. 14, 1916.,

WILLIAM N. SPRINGER, OF SOUTH BEND, INDIANA, ASSIGNOR T0 A CGRPORATION OF ILLINOIS.

' PLOW.

Application filed December 2c, 1912, Serial No. 738,704.

To all whom it may concern Be it known that I, WILLIAM N. SPRINGER, a citizen of the United States, residing at South Bend, in the county of St. Joseph and State of Indiana, have invented certain new and useful Improvements in Plows, of which the following is a specification, reference beinghad therein to the accompanying draw- 1n g This invention relates to improvements inplows and more especially to improvements in plow bottoms or bodies which are provided with readily detachable plow shares or points. Plow bottoms or bodies embodyin'g my invention can be used as desired either as parts of walking plows, as parts of riding plows, or as parts of engine gang lows.

The principal object of the invention is to provide in a plowbody having a detachable share, improved mechanism adapted to read ily lock the share in place and to permit its easy removal.

Of the accompanying drawings which illustrate one embodiment of the inven" tion,-Figure 1 is a perspective view taken looking at the plow from beneath.

Fig. 2 is a detail cross sectional view through the locking mechanism. Fig. 3 is a detail view of the lockinp mechanism detached from the other parts or the plow body.

Referringto the dra\vings,1 represents the frog upon which the other parts of the plow are mounted. This frog is preferably formed of sheet metal and is forged into the proper shape. The frog may be secured by means "of bolts or rivets to the plow standard 2.

3 is the moldboard which is riveted or bolted to the frog, and. a is the landside which is also secured to the frog. The moldboard andlandside are connected by a re inforcing brace 5. it will be understood that under some circumstances the landside may be omitted and I do not therefore limit my invention to a plow body having a landside.

6 represents as a whole the detachable point or share. This share is shaped at its rear side toengage and aline with thelandside-and the moldboard at its lower end in- Speeification of Letters Patent.

(permit to pass through,and the flh'nge sci-yea topre Patented Nov. 14, 1916.

Renewed March 30, 1916. Serial No. 87,848.

ner side to engage with and be supported by the parts of the frog to which the mold- AVERY COMPANY, I

board and landside are respectively connected. Projecting downward from the lower side of the moldboard section of the share is a P1110! button 7. This is provided at its outer end with a flange or collar for a purpose to be described.

8 is a bracket mounted upon the main part of the plow body. This bracket is preferably a strip of metal which is bent to provide two end parts adapted to engage re spectively with the frogand the moldboard, and a central part in a plane at an angle to the plane of the end parts. The end parts of the bracket 8 are preferably secured to the under sides of the frog and the moldboard, but it willbe understood'thatthere may be variation as to the exact form and mode of attachment of the bracket. Preferably as shown in the drawings, one end of the bracketil is carried forward so as to provide a support for the outer part of the moldboa-rd.

The central part of the bracket 8 is provided' at 9 with a non-circular and preferably rectangular aperture. Through this aperture 9 there extends a link 10 which is piv oted at its rear end to a cam lever'll. The lever 11 is forked at its inner end to embrace the link 10 and the two forks of the'lever are provided at 12 with cam surfaces adapted to engage the surface of the bracket 8. The cam is provided with a fiat portion adapted to engage the bracket when the share is drawn into its operative position.- This fiat surface servesto prevent accidental movement of the cam lever to release the share. The link 10 has two parts, the rear part 13 which extends through the aperture 9 having a socket 14 into which is screwed the end of the front part which is a bolt .15.

preferably rectangular in cross section and its engagement with the walls of the aperture 9 prevents turning. The bolt has an eye at 16 adapted to engage the button 7 on the share. The. eye 16 is large enough to the flange at the'e'nd of the button objections incident .to earlier with stationary objects.

vent the accidental removal of the bolt after it is oncein place. 7

In operation when it is desired to secure the share in place it is simply necessary to engage the eye of the bolt 15 with the button 7 on the share and then to swing the lever 11 into the position shown in the drawing. This causes the 'cam surfaces at 12110 press against the surface of the bracket and force the linklO backward. Tension is transmitted through the link 10 to the share, the result being that the share is forced backward into firm engagement with the other parts of the plow body- When it is desired, for any reason, to remove the share, this can be done simply-by swinging the lever 11 into a position at an angle to the link 10,- sufiicient play thus resulting to v-broadly claim such a construction to be my invention. Most earlier devices with which I am. familiar have involved the use either. of bolts or nuts, or more or less complicated lever mechanisms. Bolts and nuts are objectionable for the'reason that wrenches are required to operate them, and are further objectionable for the reason that the nuts may become tight on thebolts from any of a variety of causes, such as mechanical in-' jury to the threads, rust, or accumulation of dirt. The other earlier proposed devices with which I am familiar have involved mechanisms comprising systems of levers objectionable because of their complexity and liability to injury." The mechanism embodying my invention is free from the devices, for the reason that it has no nuts which must be turned and has but 'asingle pivotal con-- nection which is so locatedthat it can be easily cared for and lubricated when necessary. The parts of my mechanism are relatively simple in outline and there are no projections and angles, which mi ht accu mulate an undue amount of dirt and trash. :lhenormal'position of the locking lever ll is parallel to the line of draft and there is therefore no tendency i'o'rit to be moved toan inoperative position by engagement What I claim is 1. In. a plow body, the combination with a frog and a. moldboard; secured thereto, of

threaded together length, means for connecting the forward end of the link tothe share, and ineans for tensioning the link to draw the share into place and secure it, the said means comprislng two engaging elements one of which is f movable relatively to the other, one of the said elements being carried by the link and having a fixed point of connection thereto.

2.- In a plow body, the combination with:

a frog and a moldboard secured thereto, of a detachable share adapted to engage the frog and the moldboard, a longitudinal link comprising two parts threaded together to permit adjustmentv in total length, means for manually detachably connecting the forward end of the link to the share, and means for tensioning the link to draw the share into place and. secure it, the. said means com-' pris ng two engaging elements one of which is movable relatively to the other, one of the said elements being carried by the link and having a tired point of connection thereto.

3. In a plow body, the combination with a frog and a moldboard' secured thereto, of

a detachableshare adapted'to engagethe frog and the moldboard, a. bracket (3011-, nected to the frog andmoldboard and having an aperture, 2:. link: extending through the aperture and ilomprising two parts permit adjustment in total length, means for. manually: detachably connecting the forward endiof the link to the share, and. alev'er pivoted to the rear end ofthe link and provided with a cam surface adapted, when the lever is moved,

to engage the bracket and'tension the link whereby the share isdrawn into place and secured.

4.. In a. low body, the combination with a frog an [a moldboard secured thereto, of a detachable share adapted frog and the -moldboard, a brat": et con nected tothe frog and moldboard and having a non-circular aperture, 2, link extending through the apfijture and-ap proximately fitting it, the saidk comprisin two parts threaded together topermitadjustment in total length,means.for detachably connect ing the forward end of thelink to and means for tensioning the link todraw the share into place and secure it.

5. in a plow body, the combination with a frog and a moldboard secured thereto, of a detachable shareadapted to en age the frog and the moldboard, a brac et connected to the frog and moldboard" and havto en age'the 5 the sh'are,

drawn into place and secured, the said cam having a flatipart engaging a corresponding flat part of the bracket when the share is in place.

In testimony whereof I afiix my signature, in presence of two witnesses.

WILLIAM N. SPRINGER Witnesses:

EnwiN NIoAR, S. A. OREssY. 

